#include "inc/esp_wifi_sta.h"
#include "E:\app\Espressif\frameworks\esp-idf-v5.0.1\components\esp_wifi\include\esp_wifi.h"
#include "E:\app\Espressif\frameworks\esp-idf-v5.0.1\components\esp_http_server\include\esp_http_server.h"

/* FreeRTOS event group to signal when we are connected*/
static EventGroupHandle_t s_wifi_event_group;

/* The event group allows multiple bits for each event, but we only care about two events:
 * - we are connected to the AP with an IP
 * - we failed to connect after the maximum amount of retries */
#define WIFI_CONNECTED_BIT BIT0
#define WIFI_FAIL_BIT      BIT1

static const char *TAG = "wifi station";

static int s_retry_num = 0;


static void event_handler(void* arg, esp_event_base_t event_base,
                                int32_t event_id, void* event_data)
{
    if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
        esp_wifi_connect();
    } 
    else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
        if (s_retry_num < ESP_WIFI_STA_MAXIMUM_RETRY) {
            esp_wifi_connect();
            s_retry_num++;
            ESP_LOGI(TAG, "retry to connect to the AP");
        } else {
            xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
        }
        ESP_LOGI(TAG,"connect to the AP fail");
    } 
    else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
        ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
        ESP_LOGI(TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip));
        s_retry_num = 0;
        xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
    }
}



void wifi_init_sta(char* cfg_ssid, char* cfg_pwd)
{
    s_wifi_event_group = xEventGroupCreate();

    #if !ESP_WIFI_RELOAD
        esp_netif_create_default_wifi_sta();
    #endif 
    

    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
    ESP_ERROR_CHECK(esp_wifi_init(&cfg));

    esp_event_handler_instance_t instance_any_id;
    esp_event_handler_instance_t instance_got_ip;
    ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
                                                        ESP_EVENT_ANY_ID,
                                                        &event_handler,
                                                        NULL,
                                                        &instance_any_id));
    ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
                                                        IP_EVENT_STA_GOT_IP,
                                                        &event_handler,
                                                        NULL,
                                                        &instance_got_ip));

    wifi_config_t wifi_config = {
        .sta = {
            #if !ESP_WIFI_RELOAD
            .ssid = ESP_WIFI_STA_SSID,
            .password = ESP_WIFI_STA_PASS,
            #endif 
	        .threshold.authmode = ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD,
	        .sae_pwe_h2e = WPA3_SAE_PWE_BOTH,
        },
    };
    #if ESP_WIFI_RELOAD
        strlcpy((char*)wifi_config.sta.ssid, (const char*)cfg_ssid,strlen(cfg_ssid)+1);
        strlcpy((char*)wifi_config.sta.password, (const char*)cfg_pwd,strlen(cfg_pwd)+1);
        //ESP_ERROR_CHECK(esp_wifi_disconnect());
    #endif 


    ESP_LOGI("cfgssid","%s",wifi_config.sta.ssid);
    ESP_LOGI("cfgpwd","%s", wifi_config.sta.password);

    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
    ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config) );
    ESP_ERROR_CHECK(esp_wifi_start() );

    ESP_LOGI(TAG, "wifi_init_sta finished.");

    /* Waiting until either the connection is established (WIFI_CONNECTED_BIT) or connection failed for the maximum
     * number of re-tries (WIFI_FAIL_BIT). The bits are set by event_handler() (see above) */
    EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
            WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
            pdFALSE,
            pdFALSE,
            portMAX_DELAY);

    /* xEventGroupWaitBits() returns the bits before the call returned, hence we can test which event actually
     * happened. */
    if (bits & WIFI_CONNECTED_BIT) {
        ESP_LOGI(TAG, "connected to ap SSID:%s password:%s",
                cfg_ssid, cfg_pwd);
    } else if (bits & WIFI_FAIL_BIT) {
        ESP_LOGI(TAG, "Failed to connect to SSID:%s, password:%s",
                cfg_ssid, cfg_pwd);
    } else {
        ESP_LOGE(TAG, "UNEXPECTED EVENT");
    }

    /* The event will not be processed after unregister */
    ESP_ERROR_CHECK(esp_event_handler_instance_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, instance_got_ip));
    ESP_ERROR_CHECK(esp_event_handler_instance_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, instance_any_id));
    vEventGroupDelete(s_wifi_event_group);
}

void esp_wifi_mode_sta(void)
{
    ESP_LOGI(TAG, "ESP_WIFI_MODE_STA");
    wifi_init_sta("Xiaomi_121A","88888888");
}


#define  delay_ms(x)  vTaskDelay(x / portTICK_PERIOD_MS)
esp_err_t wifi_connect(char* conf_ssid, char* conf_pwd)
{
    esp_wifi_stop();
    esp_wifi_deinit();
    delay_ms(1000);
    wifi_init_sta(conf_ssid, conf_pwd);
    return ESP_OK;
}
